Merge 27dea683a557793259c3119a63d50eaa5c621453 into 4beab63631764fc381a0e56273faf8d43b8f9509

Fixes #3402

nvm.sh

@@ -503,9 +503,9 @@ $(nvm_wrap_with_color_code 'y' "${warn_text}")"
 }
 
 nvm_process_nvmrc() {
-  local NVMRC_PATH="$1"
+  local NVMRC_PATH
+  NVMRC_PATH="$1"
   local lines
-  local unpaired_line
 
   lines=$(command sed 's/#.*//' "$NVMRC_PATH" | command sed 's/^[[:space:]]*//;s/[[:space:]]*$//' | nvm_grep -v '^$')
 
@@ -515,8 +515,12 @@ nvm_process_nvmrc() {
   fi
 
   # Initialize key-value storage
-  local keys=''
-  local values=''
+  local keys
+  keys=''
+  local values
+  values=''
+  local unpaired_line
+  unpaired_line=''
 
   while IFS= read -r line; do
     if [ -z "${line}" ]; then
@@ -682,6 +686,11 @@ nvm_ensure_version_installed() {
   LOCAL_VERSION="$(nvm_version "${PROVIDED_VERSION}")"
   EXIT_CODE="$?"
   local NVM_VERSION_DIR
+
+  if [ "_$PROVIDED_VERSION" = "_N/A" ] && [ ! -d "$NVM_RC_VERSION" ] ; then
+    PROVIDED_VERSION="$(nvm_ensure_version_prefix "$NVM_RC_VERSION")"
+  fi
+
   if [ "${EXIT_CODE}" != "0" ] || ! nvm_is_version_installed "${LOCAL_VERSION}"; then
     if VERSION="$(nvm_resolve_alias "${PROVIDED_VERSION}")"; then
       nvm_err "N/A: version \"${PROVIDED_VERSION} -> ${VERSION}\" is not yet installed."

test/slow/nvm use/Running 'nvm use' displays .nvmrc version in output messages

@@ -0,0 +1,23 @@
+#!/bin/sh
+
+set -ex
+
+die () { echo $@ ; exit 1; }
+
+. ../../../nvm.sh
+
+echo "v0.10.28" > .nvmrc
+OUTPUT="$(nvm use 2>&1 >/dev/null | awk 'NR==1')"
+EXPECTED_OUTPUT='N/A: version "v0.10.28" is not yet installed.'
+TESTTT="$(nvm use 2>&1 >/dev/null)"
+TESTT="$(nvm use 2>&1)"
+TEST="$(nvm use)"
+
+[ "_$OUTPUT" = "_$EXPECTED_OUTPUT" ] \
+  || die "'nvm use' did not output: '$EXPECTED_OUTPUT'; got: '$OUTPUT'; Normal: $TEST; with 2>&1: $TESTT; with /null: $TESTTT"
+
+OUTPUT="$(nvm use 2>&1 >/dev/null | awk 'NR==3')"
+EXPECTED_OUTPUT='You need to run "nvm install v0.10.28" to install it before using it.'
+
+[ "_$OUTPUT" = "_$EXPECTED_OUTPUT" ] \
+  || die "'nvm use' did not output: '$EXPECTED_OUTPUT'; got: '$OUTPUT'"

test/slow/nvm use/setup_dir

@@ -19,5 +19,9 @@ for VERSION in "1.0.0" "1.0.1"; do
   nvm install "iojs-v$VERSION"
 done
 
+if [ -f ".nvmrc" ]; then
+  mv .nvmrc .nvmrc.bak
+fi
+
 nvm_make_alias lts/testing 0.10.1
 nvm_make_alias 'lts/*' lts/testing

test/slow/nvm use/teardown_dir

@@ -20,3 +20,9 @@ if [ -d "${NVM_DIR}/.nvm_use_lts_alias_bak" ]; then
   mv "${NVM_DIR}/.nvm_use_lts_alias_bak/*" "${NVM_DIR}/alias/lts/"
   rmdir "${NVM_DIR}/.nvm_use_lts_alias_bak"
 fi
+
+rm .nvmrc
+
+if [ -f ".nvmrc.bak" ]; then
+  mv .nvmrc.bak .nvmrc
+fi